Bobtail dipole
- Bobtails are vertical arrays that look like the letter "E" turned 90° clockwise onto its tails. They have 3 quarterwave vertical elements and are one wavelength long. The Half Square is a shortened Bobtail- it has 2 quarterwave vertical elements and is a half wave long.

QuarterWave Verticals
- One of the most useful antennas in the repertoire is the Marconi or quarterwave grounded vertical antenna. Its invention made it possible to halve the length of antennas, simplifying communications, especially at HF and below.

QuarterWave with radials
- VHF quarterwave antenna mainly for scanner usage, The quarterwave antenna is an easily designed and constructed antenna for whatever frequency you want, although with the following design, you may to limit it to the VHF and UHF bands due to the physical size.

Quarterwave vertical antenna
- About the basics of the quarterwave vertical and ground plane antennas that ares widely used for medium wave broadcasting, mobile radio communications applications and many more.

3 EL Quad Designer
- This DOS program will figure the wire sizes for a 3 element quad and will also give you the distance from the center of the boom to drill your holes for mounting the wire on the spider. it also gives you the length of the 4 quarterwave lengths of wire in case you would like to figure the spreader drill points yourself.